Many Cycle tourists have adopted Shimano's sandal for that reason,
shoe adjusts to fit thick insulating socks.
Keens commuter sandal is more confining and is shaped for a narrower foot.
Frequently noted..
for summer use, they are OK
I won by having B width feet, and got a little used pair, cheap, from someone else..

[then I found a Cleatless Keen clone, that did fine, weighed less,
no cleat clinking on the pavement.. ]